"Most Q&A sites (StackExchange included) let the community vote for the best answer, when really the person whose opinion matters most is the one who asked the

"Most Q&A sites (StackExchange included) let the community vote for the best answer, when really the person whose opinion matters most is the one who asked the question." I'm not sure that's correct. Didn't the person ask the question in the first place because they didn't know the answer? In the case of a technical question, someone might give them an answer which produces the correct output but in a terrible way, the person who asked the question might be tempted to mark this as the best answer and move on.